TMG Server Enterprise Edition after recovery from old backup doesn’t TMG show management console and service ISASTGCTRL is stopped. In Event Viewer is error:
The ISASTGCTRL service terminated with the following error: %%-1073741823
Enterprise Edition stores configuration data in Active Directory. In my case restored server from old backup displays NETLOGON errors connecting Domain Controller
Solution: disconnect TMG server from network, change system time to time of backup’s creation, restart TMG server, change system time to current, connect to network and restart TMG server again. After that TMG service ISASTGCTRL starts, connects to Active Directory and management console starts, too.